2 Corinthians 4:4

4:4 among whom the god of this age has blinded the minds of those who do not believe so they would not see the light of the glorious gospel of Christ, who is the image of God.

2 Corinthians 8:22

8:22 And we are sending with them our brother whom we have tested many times and found eager in many matters, but who now is much more eager than ever because of the great confidence he has in you.